Metal processing machine



June 1935- H. G. R. BENNETT METAL PROCESSING MACHINE Filed Dec. 29, 19533' SheetsSheet 1 HEP5ET 5. E. BENNETT,

June 18, 1935- H. G. BENNETT METAL PROCES S ING MACHINE Filed Dec. 29',1935 s Sheets-Sheet 2 HERBERT 5 E. BENNETT,

5/5 fi/farneys,

June 18, 1935. H, R BENNETT 2,005,127

METAL PROCESSING MACHINE Filed Dec, 29, 1953 3 Sheets-Sheet I5 hwenfor:f/E'EBEET 6. E. BENNETT,

r e ted June s, 1935 I at 2,005,127

r 2,005,127 t i r METAL .rnoc issmo MACHINE. Herbert G. R. Bennett,Duquesne, Pa. Application December 29, 1933, Serial No. 704,573

I "3 Claims (01. 164 66 g I y g C I This invention relates to metalprocessing ma- 7 Figure 8 is a; sectionalend' elevation oi the chinesand particularly to rotary shearsior use Shear p i I y in shearing'theends of bars passing through a Figure 9 is a diagrammaticrepresentation- Of a continuous mill or: the like. Such shears arewiring circuit which may be used foractuating '5 usuallyoperative tocropor sever the cold ends theapparatus of. theinvention; t of the barswhile the latter are moving. R i r in m r parti ularly t h drawi s. Ashear. of the type described is disclosed in the numeral 2 designatesabed upon which there Patent No. 1,853,434 to Kling, April 12, 1932, andis adapted to r st a mill h usin 3. Th m ll provides a construction inwhich the cutting housing 3 supports a plurality of rolls 4, whichUNiTEDA YSTA 10' knives are mounted in substantial; alinement may be anyof a number of well known types, and i0 during the shearing cycleand inwhich provision which are driven from .a pinion box 5 through a is madeto guide the movable knife holder during coupling 6. a A gear reductiontransmission unit ts rotary movement so that it will register with 1 ismelmted on the other side of t pi o box the cooperating element of theother knife mem- 5 and Provided with 0 9 8 member i 15 berwhen they arebrought into cutting position. i l h m lf .Aoe iee i this sort is highlyefficient in op- A suiteblemeter 9 iS-eeeured tethe d 1 e eration, butconsiderable difliculty isex'p'erienced m t gear, reductionirensmieeienriunit 1 in preventing the" knives from overtraveling' theirfi '3??? to drive the te through 5 9" initialpos'iti'on,withthe resultthat when makin P v r r 0 the next cycle there isnot'sufflcientacceleratio A housm? pp-stnoned on the m thereof tofunction without deforming or dissianttielelmement t the=mm g andtorting the end of the bar. 'If the shear" islo- Serves SUPWTWPP 41 hemand cated between two stands of a continuous mill, respectively sheararm or lever the deformed or distorted end of the bar'causes cured 9the'uppgr shaft 51mm,

considerable delay by not entering the' nextpass. am gamma q fit each 25One object of the present invention is the promg Provided with kmfe asat and HIef vision of a novel metal'processing machine; such spggtlvelyA [Shaft is suitably supportedon as a rotary shear, having a drivingmeans which the bed '2 and cq-nn'ected to the lower shaft I willpositively and automatically return the of the gear housing is sgcuredto g 7 i one end of the shaft l5 and serves to give ro- 80 processingelements, or shear .kn1ves, to their tation to a similar ear n which isconnected r initial positions after'th'eir' cycle of operation, reto theu shaft The r en of the Sumng in clean processing shearing opera" shaft20 rovided with a'coupling member 23 tion, without anyof thedifficulties referred to. to whichvthgre is secured a Shaft havingfoiizzsig iihaitsri ttiiiiiziizrr a meeeefle or like construction, which'may be economically i 3:55 2gi gggifi f i;g ?g$ %fih eit D Y. m ed 9existlnefivpee of eqmp' is adapted to be driven through a link'lbelt 28These and further objects will be a rent by meansof gear the latterbeing Seemed 40 after referring to thegdrmvmgs in g ge toithedrlt'filfll shaft of the gear reduction trans- 40 Figure 1 PM 95* Toningmm with a shear 'i li rn o tor is operated in such manner as' to ofgeneral type of Prim P t referred. give motion to the gear reductiontransmission to disposed -on its delivery side, together with. u 1, t mg m-t plnlo'h ox g s 5 Were-ting devices p t s -h. v, rolls 4 or themill'housing a; The gear- :a is F re 2 and 5 areelevatiens of the shearrotated by thedriveri element of, the'gea'r reducknives In variousstages eff eperetiention transmissionjunit 1 and causes the shaft 2(-ifigure 6 isafragmentary plan of partof the to rotate through'the linkbelt-28 andgear 2'|. driving devices for the rotary sheanand showing Thmagnetic "brake 2! and" magnetic clutch 28' the novel apparatus of theinvention part of serve to periodically'rotate the shaft 2| which, 50

which is illustrated in section, through the coupling'23, causes theshaft 20 to' Figure 7 is an end'elevation of the shear'of operate theshearingfielements' or knives II and the class described, together withpart'of its driv-' I9 of the shear housing l2. As previously pointed ingmeans and several of ,theelements of the out, these devicesire'quentlyoverrun tlreiigirii- 65 present invention as applied thereto.tial positions and assume stages of operation which are in advance oftheir true positions and, when automatically actuated, cut the bar orwork-piece in such manner as to deform or distort the end thereof. 2 e 2According to the present invention, the shaft 24 is provided withadriven element 30 and a driving element 3| forming a part of a secondmagnetic clutch, while the latter further carries a gear 32.

A shaft 33 is suitably journaled on the bed 2 parallel with and closelyadjacent theshaft 24, as shown atv 34, and provided with a pinion 35. Agear 36 is likewise secured to the shaft 33 and is suitably driven by amotor 31 having a pinion 30 in constant mesh therewith, Y

In Figure 9 of the drawings, there is illus-" trated a diagram accordingto which the apparatus of the invention may. be operated. The variouselectrical elements included in this diagram are conventional in allrespects and form no part of the present invention other than as meansfor operating the mechanical elements, it being understood thatsubstitutions may be made therefor; However, according to Figure 9, theshaft 20 which drives the lowershaft ll of the shear is extended fromthe opposite side thereof, as shown at 20% A'pair of cams 20 and 20' aresecured to the extended end 20 of the shaft 20, the former serving tooperate a;- starting limit-switch 42 and the lattera cut-out limitswitch42. An adjustable timer (ortime re-' lay). is providedfor delaying therotation of the shear knives I0and I9 fora suitable and predeterminedinterval of tim An auxiliary or secondary timer (or time re lay) 40 isassociated with the timer-40 to operate in a manner to be'laterdescribed. The timer 40 is operated by a flag-switch, which is disposedin a position to be contacted by the bar, or material being processedorsheared, and

1 in advance of the shear-housing I2.-

starting rheostat'v 42 is connected, by a switch 50, between'power linesA and the continuously running m otorfl for initiating the operation ofthe latter; A manu 'A manually operable ally operable starting rheostat4415 connected,

by a switch 5|, between The switches 50 and elements are'deenerwhich isalso continuous. 5| being open, all of'the gized. According tothe'diagramillustrated, anoperating cycle of. the various elements'is asfollows:

The switches 50 and 5| are'closed, and the starting rheostats 43' andare manually operated to bring'the motors 31 and 9jup to continuousrunning speed.

The. leading end of the bar, or work-piece, emerging from therolls4contacts theflag-switch 4| and closes its contacts, which energizesLthe,

coil of the adjustable .timer 40.; After asuitableinterval of time has IelapsedQdepending upon the speed of the rolls 4 (and for which the timeris adjusted) the contacts I00 are closed. The closing of these contactsenergizes the magnetic'brake 25 throughfthe closed contacts I04 of thecut-out liinit-switchJh ythus causing the brake to release. Theclosingof con- 40 also energizes the coil of the auxiliary timer 40",through the closed contacts I05 of the cut-out limitswitch 42. 1

The contacts I02and I03 of the auxiliary timare thus immediatelyopenedto prevent the power lines and the main drive motor 9 for initiating itsoperation,

' of the magnetic clutch other elements from interfering with the cycleduring the cutting operation. 1 I

At the time the closed contacts I02 and I02 of the auxiliary timer 40are opened, theopen contact I M is closed; thus energizing the magneticclutch 26 through the closed contact I05 of the cut-out limit switch 42.The energization of the magnetic'clutch 20 causes it to engage; thus themotor 0, which has been continuously rotating the shaft 24, through thechain 20, is caused to rotate'the shaft 24. The shaft 20 is driventhr'ou'ghthe shaft.24 to rotate the shafts I4 and I5 upon which theshear knives I0 and I0 are mounted. The movement of the knives is,through approximately seven-eighths of a revolution; or in other words,from the at-rest" .position to :just beyond the "cut" position. At

this last position, the cam 20, on the extension 20* of the shaft '20,causes the opening of the contacts I04 and I05 of the cut-outlimit-switch 42 The opening of the contact I05 deener- ,giz'esthe-coilof the auxiliary timer 40 ,-which mg the shaft, 24" from thesh'aft 24and themotor 9.

limit-switch 42* also deenergizesthe magnetic brake"25," causingit tostop the rotation of the now disconnected shaft 24'. I This actionbrings the shear shafts I4 and I5'to rest. f" Shortly after the cut-outlimit switch 42"*operates to stop-the sheet, the cam 20on the ex tension20- of the shaft 20 allows contacts I05 and I0I of the startinglimit-switch 42-to close; Nothing is caused to happen by this'closing ofthe contacts --I0.5:and "I01, due to the fact that contacts I02 and I03of .the'auxiliary-timer 40' remain; open over a sumcientinterval' 'ofitime (whichisadjustable) after its coil is deenergiaed by the opening ofcontact I05 of the cut-out limit-switch 42', ;This-deenergizes themagnetic clutch 26. and the brake 25, bringing the shaft 24 and shearshafts, and. I5 to rest, aspreviously mentioned. The contactv I02 of theaux iliary timer 40'? .now closes, and the brake 25 is energized throughthe closedocontact I00 of, the startinglimit-switch 42, causing therelease of. the shaft 20. .At the sametima contact I03 of the auxiliarytimer .40 'also opens'and ener- The opening of-the contact I04jof thecut-out tact I01 of the startinglimiteswitch 42.

Duringall thisjtime v 30-3I has been continuously rotated about theshaft 24, by motor 3 I, due to the fact that it rideson a sleeve. Thedriven element of the clutch 30-", however, is keyed directly to theshaft 24" and rotates therewith. When the clutch 30-3I isenergiz'ed, therotation of the motor and shearshafts I4 and I5 to move in the reversedirectionfrom' the cutting movement of the shear knives I0 and I9through approximately threeeighths of a revolution. Atthis point the cam20 causes contacts'I00 and "I01 of the starting limit-switch 42'to open.The'openingof'contact I01 deenergize's-the magnetic clutch 30 causing itto' release; =thus'disconnectin'g the motor 3Ifrom th'e shaft 24';contact I05 of the starting limit-switch 42 deenergizes the brake-25,causing it to stop the ro tation of the shaft24. I This stops the shearknives! and I9 in the starting position. At about this time, the rearend of the bar passes The opening of the driving element. U I

:1 causes the shaft as the following bar strikes the flag-switch l I Aspreviously mentioned, the diagram of Figure 9, together with the variouselectrical elements associated therewith, is entirely conventional inall respects and forms no part of the present invention other than asmeans for operating the mechanical elements thereof, and it will bereadily apparent to those skilled in the art that numerous changes maybe made therein which may or may not render it entirely automatic. i I

While I have shown and described one specific embodiment of myinvention, it will be understood that I do not wish to be limitedexactly thereto,'since various modifications may be made withoutdeparting from the scope of my invention, as defined in the followingclaims.

I claim:

1. A metal processing machine, a shaft for driving said machine, amagnetic clutch interposed in said shaft, a magnetic'brake on saidshaft, a second magnetic clutch on said shaft, means for driving saidshaft, extraneous means for imparting rotation to said second magneticclutch, and means for controlling the operation of all of said devices.

2. A metal processing machine, a shaft for driving said machine, amagnetic clutch on said shaft, a magnetic brake on said shaft, a secondmagnetic clutch on said shaft comprising a driven element securedthereto, a gear loosely 'mounted on said shaft and carrying the drivingmember of said magnetic clutch, means for drivingsaid shaft, and meansfor rotating said gear in such manner as to restore said metalprocessing machine to a determined position in its operating cycle.

' 3. A metal processing machine, for said machine, a magnetic clutchoperatively associated with said driving means, a magnetic brake forsaid driving means, a second magnetic clutch operatively associated withsaid driving means, a flag switch disposed in the path of the work-pieceto be processed for initiating the operation of said driving means, alimit switch for discontinuing the operation of said driving means andto initiate the operation of said second magnetic clutch, and meansoperatively associated with said last named magnetic clutch forrestoring said metal processing machine to a determinedp'osition in itsoperating cycle. v ,HERBERT G. R. BENNETT.

driving means

